Change box-motion for power-looms.



' G. SGHWABE.

CHANGE BOX MOTION FOR POWER LOOMS.

APPLIOATION FILED AUG. 14, 1909.

Patented Oct. 28, 1913.

3 SHEETS-EHEET 1.

:aLuMnlA PMNDGEAPH :0..WASHINCITON. D. Cy

G'r. SCHWABE. CHANGE BOX MOTION YR POWER LOOMS.

APPLIOATION FILED AUG. 14, 1909.

3 SHEBT-SHBET 2.

CLUMBIA PLNDURAPM CIJ..wAsnlNa'ruNY D. c,

G. SGHWABE.

CHANGE BOX MOTION FOR POWER LOOMS.

APPLIOATION FILED Amm/1, 1909.

1,076,791 Patented 0011.28, 1918.

3 SHEETS-*SHEET 3.

my @Q7 JM@ n saires PATENT ernten.

Girone sorrwfrnn, .or nrnnrrz, alterata-HUNGARY.

CHANGE ROEL-MOTION FR EO'W'ER-LGDMS.

To all 'Lo/0m t may concern.

Be it known that l, Gruene Sorrwann, a manufacturer and a subject of the Enr peror of Austria-Hungary, and a resident of Bielitz, Austrian Silesia, part of the Austrollungarian Empire, have invented certain new and useful Improvements Relatingg, to Change Boxli/[otions for Power- Looms, of which the following" is a specilication.

For wide looms running' at a high speed y it is preferable to provide each side of the loom with its separate change box motion in order that the vibrations anc. pushes produced by the transpositions of the box to the other side of the hatten (when the change box motion is arranged on one side of the loom only) may be eliminated.

Generally the change box motion is arranged on the dobby motion side of the loom. ln accordance with the present invention the change box motion is also provided on the driving; side and the operation of the change box motion itself or the movement of the knives by which the rising; and falling parts such as eecentrics or cranks are operated by means of racks is here made dependent upon the picking motion and this in such a manner that the throw of the box begins as soon as the batten and picker have again reached their initial position after the pick has been given and ends shortly before the beginning; of the pick. ln order that this ratio remain invariable, the drivingr shaft which operates the hatten, is provided with common means for actuating the shuttle box as well as the picker, which means permit adjustment in any known manner relatively to said shaft. rlhus if the pick is adjusted so that it takes olace sooner or later the throw of the box also begins sooner or later in the same proportion. T his result is obtained by the double utilization of that operative part of the picking' motion which is mounted on the crank shaft of the loom (in this Case the crank In).

`Figure l shows the picking device driven by the rotating crank b with crank stud c. Fig. 2 shows on the contrary the movement of the knives for the change box motion, produced by the same crank Z; with the same crank-stud c. Fig. 3 shows the crankstud c, provided with the short link Z actuating,r the picking' device (cr. Fig. 1) and the rod z' actuating,` the throw of the box (er.` Fig, 2)

Specification of Letters Patent. Patented Oct. 28,' 1913. Application :nea August 14, laca i i i Serial No. 512,773.

sitting beside the fermer on an elongation of the c-rank-stiild. Fig'. 4 shows thechang'e box motion and the picking` motion, the latter shortly before the beginning' of the pick, and Fig. 5 illustrates part of a loom provided with my improved change box 1notion.

The driving wheel of the main shaft a. of a loom is provided with an integral crank the wrist-pin c of which is, by link Z connected to a swinging arm e. The pintle c of link CZ, is by rod f connected to a two-arm lever g, which in turn, by rod h, lever n, and strap 'U' act-uates the picker stick e0 and hammer fr, to drive the shuttles. Picker stick e0 is fulcrumcd on a forwardly projecting pin fw of a sleeve 'L02 which is faston a rock shaft (I journaled in the loom frame, said shaft also carrying the lay sword g of lay (72.

lt will be seen that by the construction described, the picker stick may freely oscillate to drive the shuttles, while it also participates in the oscillating;V movementof the lay imparted to the latter from shaft a in conventional. manner through crank a', link a2 and the arm (13 of sword q. VVrist-pin c, is by link t' further connected to a two-arm lever pivoted at I7', to the loom-franic- Lever rr, is by rods Z, m connected to the nives n, o, respectively, which transmit motion to rack 79. rlhe latter meshes into a pinion y, fast on the shaft t', of an eccentric t, which by rod t2, transmits motion to a lever u. rlfhis lever is in turn by rod u connected to shuttle box s, and thus effects a raising' or loweringl of said box. liy the construction described, the position of lever Za, is dependent upon that of crank l), so that the beginning of the box raise is properly timed with relation to the beginning; of the picking movement of the picker stick. At their upper ends. racks 79 are engaged by levers r, connected to wires s, which are in turn influenced by the cards. By tiltingl levers r, their tappets are brought before either one of the knives, as will be readily understood.

It will be seen that by the construction described, crank b actuates the picker sticks f rie I claim:

A device of the character described, comprising a frame, a lay fulcrumed to the frame, shuttle box and a picker Stick cooperating with the lay, a shuttlebox operating mechanism, a picker stick operating mechanism, means for oscillating the lay, and common means for actuating the shuttle box operating mechanism and the picker stick operating' mechanism, said means permitting adjustment relatively to the lay oscillating means, whereby both the shuttle Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

box operating mechanism and the picker stick operating mechanism may be adjusted in unison relatively to the lay oscillating 15 means.

In Witness whereof I have hereunto signed my name in the presence of two Witnesses.

GEORG SCHWABE.

lVitnesse's THEDOI: SCHWARZ, FRIEDRICH SCHWARZ.

Washington, D. C. 

